Liquid crystal disc memory with circular grooves for auto-focusi

Details Liquid crystal disc memory with circular grooves for auto-focusi Liquid crystal disc memory with circular grooves for auto-focusi

1987-02-20

1989-05-23

Miller, Stanley D.

Static information storage and retrieval

Magnetic bubbles

Guide structure

350331R, 350350S, 350339R, 365108, 365114, 369111, 369275, 369284, 357 7, G02F 113

Patent

active

048324566

ABSTRACT:
An improved optical memory disc is disclosed which has a liquid crystal layer on which information is written by applying electric field. The liquid crystal layer is sectioned into a plurality of concentric tracks by concentric grooves. When information is written or read, an auto-tracking method can implemented by aid of the grooves.

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Brody et al. "A 6X6 Inch 20 Lines-Per-Inch Liquid-Crystal Display Panel" IEEE Trans. On Elec. Dev. vol. ED-20, No. 11, pp. 995-1001.

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